/*
 *      Copyright (C) 2005-2008 Team XBMC
 *      http://www.xbmc.org
 *      Copyright (C) 2008-2009 Andrej Stepanchuk
 *      Copyright (C) 2009-2010 Howard Chu
 *
 *  This file is part of librtmp.
 *
 *  librtmp is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as
 *  published by the Free Software Foundation; either version 2.1,
 *  or (at your option) any later version.
 *
 *  librtmp is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with librtmp see the file COPYING.  If not, write to
 *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA  02110-1301, USA.
 *  http://www.gnu.org/copyleft/lgpl.html
 */

#include <string.h>
#include <assert.h>
#include <stdlib.h>

#include "rtmp_sys.h"
#include "amf.h"
#include "rtmp_log.h"
#include "bytes.h"

static const AMFObjectProperty AMFProp_Invalid = { { 0, 0 }, AMF_INVALID };
static const AVal AV_empty = { 0, 0 };

/* Data is Big-Endian */
unsigned short
AMF_DecodeInt16(const char *data)
{
	unsigned char *c = (unsigned char *)data;
	unsigned short val;
	val = (c[0] << 8) | c[1];
	return val;
}

unsigned int
AMF_DecodeInt24(const char *data)
{
	unsigned char *c = (unsigned char *)data;
	unsigned int val;
	val = (c[0] << 16) | (c[1] << 8) | c[2];
	return val;
}


unsigned int
AMF_DecodeInt32(const char *data)
{
	unsigned char *c = (unsigned char *)data;
	unsigned int val;
	val = (c[0] << 24) | (c[1] << 16) | (c[2] << 8) | c[3];
	return val;
}

void
AMF_DecodeString(const char *data, AVal *bv)
{
	bv->av_len = AMF_DecodeInt16(data);
	bv->av_val = (bv->av_len > 0) ? (char *)data + 2 : NULL;
}

void
AMF_DecodeLongString(const char *data, AVal *bv)
{
	bv->av_len = AMF_DecodeInt32(data);
	bv->av_val = (bv->av_len > 0) ? (char *)data + 4 : NULL;
}

double
AMF_DecodeNumber(const char *data)
{
	double dVal;
#if __FLOAT_WORD_ORDER == __BYTE_ORDER
#if __BYTE_ORDER == __BIG_ENDIAN
	memcpy(&dVal, data, 8);
#elif __BYTE_ORDER == __LITTLE_ENDIAN
	unsigned char *ci, *co;
	ci = (unsigned char *)data;
	co = (unsigned char *)&dVal;
	co[0] = ci[7];
	co[1] = ci[6];
	co[2] = ci[5];
	co[3] = ci[4];
	co[4] = ci[3];
	co[5] = ci[2];
	co[6] = ci[1];
	co[7] = ci[0];
#endif
#else
#if __BYTE_ORDER == __LITTLE_ENDIAN	/* __FLOAT_WORD_ORER == __BIG_ENDIAN */
	unsigned char *ci, *co;
	ci = (unsigned char *)data;
	co = (unsigned char *)&dVal;
	co[0] = ci[3];
	co[1] = ci[2];
	co[2] = ci[1];
	co[3] = ci[0];
	co[4] = ci[7];
	co[5] = ci[6];
	co[6] = ci[5];
	co[7] = ci[4];
#else /* __BYTE_ORDER == __BIG_ENDIAN && __FLOAT_WORD_ORER == __LITTLE_ENDIAN */
	unsigned char *ci, *co;
	ci = (unsigned char *)data;
	co = (unsigned char *)&dVal;
	co[0] = ci[4];
	co[1] = ci[5];
	co[2] = ci[6];
	co[3] = ci[7];
	co[4] = ci[0];
	co[5] = ci[1];
	co[6] = ci[2];
	co[7] = ci[3];
#endif
#endif
	return dVal;
}

int
AMF_DecodeBoolean(const char *data)
{
	return *data != 0;
}

char *
AMF_EncodeInt16(char *output, char *outend, short nVal)
{
	if (output + 2 > outend)
		return NULL;

	output[1] = nVal & 0xff;
	output[0] = nVal >> 8;
	return output + 2;
}

char *
AMF_EncodeInt24(char *output, char *outend, int nVal)
{
	if (output + 3 > outend)
		return NULL;

	output[2] = nVal & 0xff;
	output[1] = nVal >> 8;
	output[0] = nVal >> 16;
	return output + 3;
}

char *
AMF_EncodeInt32(char *output, char *outend, int nVal)
{
	if (output + 4 > outend)
		return NULL;

	output[3] = nVal & 0xff;
	output[2] = nVal >> 8;
	output[1] = nVal >> 16;
	output[0] = nVal >> 24;
	return output + 4;
}

char *
AMF_EncodeString(char *output, char *outend, const AVal *bv)
{
	if ((bv->av_len < 65536 && output + 1 + 2 + bv->av_len > outend) ||
		output + 1 + 4 + bv->av_len > outend)
		return NULL;

	if (bv->av_len < 65536)
	{
		*output++ = AMF_STRING;

		output = AMF_EncodeInt16(output, outend, bv->av_len);
	}
	else
	{
		*output++ = AMF_LONG_STRING;

		output = AMF_EncodeInt32(output, outend, bv->av_len);
	}
	memcpy(output, bv->av_val, bv->av_len);
	output += bv->av_len;

	return output;
}

char *
AMF_EncodeNumber(char *output, char *outend, double dVal)
{
	if (output + 1 + 8 > outend)
		return NULL;

	*output++ = AMF_NUMBER;	/* type: Number */

#if __FLOAT_WORD_ORDER == __BYTE_ORDER
#if __BYTE_ORDER == __BIG_ENDIAN
	memcpy(output, &dVal, 8);
#elif __BYTE_ORDER == __LITTLE_ENDIAN
	{
		unsigned char *ci, *co;
		ci = (unsigned char *)&dVal;
		co = (unsigned char *)output;
		co[0] = ci[7];
		co[1] = ci[6];
		co[2] = ci[5];
		co[3] = ci[4];
		co[4] = ci[3];
		co[5] = ci[2];
		co[6] = ci[1];
		co[7] = ci[0];
	}
#endif
#else
#if __BYTE_ORDER == __LITTLE_ENDIAN	/* __FLOAT_WORD_ORER == __BIG_ENDIAN */
  {
	  unsigned char *ci, *co;
	  ci = (unsigned char *)&dVal;
	  co = (unsigned char *)output;
	  co[0] = ci[3];
	  co[1] = ci[2];
	  co[2] = ci[1];
	  co[3] = ci[0];
	  co[4] = ci[7];
	  co[5] = ci[6];
	  co[6] = ci[5];
	  co[7] = ci[4];
  }
#else /* __BYTE_ORDER == __BIG_ENDIAN && __FLOAT_WORD_ORER == __LITTLE_ENDIAN */
  {
	  unsigned char *ci, *co;
	  ci = (unsigned char *)&dVal;
	  co = (unsigned char *)output;
	  co[0] = ci[4];
	  co[1] = ci[5];
	  co[2] = ci[6];
	  co[3] = ci[7];
	  co[4] = ci[0];
	  co[5] = ci[1];
	  co[6] = ci[2];
	  co[7] = ci[3];
  }
#endif
#endif

  return output + 8;
}

char *
AMF_EncodeBoolean(char *output, char *outend, int bVal)
{
	if (output + 2 > outend)
		return NULL;

	*output++ = AMF_BOOLEAN;

	*output++ = bVal ? 0x01 : 0x00;

	return output;
}

char *
AMF_EncodeNamedString(char *output, char *outend, const AVal *strName, const AVal *strValue)
{
	if (output + 2 + strName->av_len > outend)
		return NULL;
	output = AMF_EncodeInt16(output, outend, strName->av_len);

	memcpy(output, strName->av_val, strName->av_len);
	output += strName->av_len;

	return AMF_EncodeString(output, outend, strValue);
}

char *
AMF_EncodeNamedNumber(char *output, char *outend, const AVal *strName, double dVal)
{
	if (output + 2 + strName->av_len > outend)
		return NULL;
	output = AMF_EncodeInt16(output, outend, strName->av_len);

	memcpy(output, strName->av_val, strName->av_len);
	output += strName->av_len;

	return AMF_EncodeNumber(output, outend, dVal);
}

char *
AMF_EncodeNamedBoolean(char *output, char *outend, const AVal *strName, int bVal)
{
	if (output + 2 + strName->av_len > outend)
		return NULL;
	output = AMF_EncodeInt16(output, outend, strName->av_len);

	memcpy(output, strName->av_val, strName->av_len);
	output += strName->av_len;

	return AMF_EncodeBoolean(output, outend, bVal);
}

void
AMFProp_GetName(AMFObjectProperty *prop, AVal *name)
{
	*name = prop->p_name;
}

void
AMFProp_SetName(AMFObjectProperty *prop, AVal *name)
{
	prop->p_name = *name;
}

AMFDataType
AMFProp_GetType(AMFObjectProperty *prop)
{
	return prop->p_type;
}

double
AMFProp_GetNumber(AMFObjectProperty *prop)
{
	return prop->p_vu.p_number;
}

int
AMFProp_GetBoolean(AMFObjectProperty *prop)
{
	return prop->p_vu.p_number != 0;
}

void
AMFProp_GetString(AMFObjectProperty *prop, AVal *str)
{
	*str = prop->p_vu.p_aval;
}

void
AMFProp_GetObject(AMFObjectProperty *prop, AMFObject *obj)
{
	*obj = prop->p_vu.p_object;
}

int
AMFProp_IsValid(AMFObjectProperty *prop)
{
	return prop->p_type != AMF_INVALID;
}

char *
AMFProp_Encode(AMFObjectProperty *prop, char *pBuffer, char *pBufEnd)
{
	if (prop->p_type == AMF_INVALID)
		return NULL;

	if (prop->p_type != AMF_NULL && pBuffer + prop->p_name.av_len + 2 + 1 >= pBufEnd)
		return NULL;

	if (prop->p_type != AMF_NULL && prop->p_name.av_len)
	{
		*pBuffer++ = prop->p_name.av_len >> 8;
		*pBuffer++ = prop->p_name.av_len & 0xff;
		memcpy(pBuffer, prop->p_name.av_val, prop->p_name.av_len);
		pBuffer += prop->p_name.av_len;
	}

	switch (prop->p_type)
	{
	case AMF_NUMBER:
		pBuffer = AMF_EncodeNumber(pBuffer, pBufEnd, prop->p_vu.p_number);
		break;

	case AMF_BOOLEAN:
		pBuffer = AMF_EncodeBoolean(pBuffer, pBufEnd, prop->p_vu.p_number != 0);
		break;

	case AMF_STRING:
		pBuffer = AMF_EncodeString(pBuffer, pBufEnd, &prop->p_vu.p_aval);
		break;

	case AMF_NULL:
		if (pBuffer + 1 >= pBufEnd)
			return NULL;
		*pBuffer++ = AMF_NULL;
		break;

	case AMF_OBJECT:
		pBuffer = AMF_Encode(&prop->p_vu.p_object, pBuffer, pBufEnd);
		break;

	default:
		RTMP_Log(RTMP_LOGERROR, "%s, invalid type. %d", __FUNCTION__, prop->p_type);
		pBuffer = NULL;
	};

	return pBuffer;
}

#define AMF3_INTEGER_MAX	268435455
#define AMF3_INTEGER_MIN	-268435456

int
AMF3ReadInteger(const char *data, int32_t *valp)
{
	int i = 0;
	int32_t val = 0;

	while (i <= 2)
	{				/* handle first 3 bytes */
		if (data[i] & 0x80)
		{			/* byte used */
			val <<= 7;		/* shift up */
			val |= (data[i] & 0x7f);	/* add bits */
			i++;
		}
		else
		{
			break;
		}
	}

	if (i > 2)
	{				/* use 4th byte, all 8bits */
		val <<= 8;
		val |= data[3];

		/* range check */
		if (val > AMF3_INTEGER_MAX)
			val -= (1 << 29);
	}
	else
	{				/* use 7bits of last unparsed byte (0xxxxxxx) */
		val <<= 7;
		val |= data[i];
	}

	*valp = val;

	return i > 2 ? 4 : i + 1;
}

int
AMF3ReadString(const char *data, AVal *str)
{
	int32_t ref = 0;
	int len;
	assert(str != 0);

	len = AMF3ReadInteger(data, &ref);
	data += len;

	if ((ref & 0x1) == 0)
	{				/* reference: 0xxx */
		uint32_t refIndex = (ref >> 1);
		RTMP_Log(RTMP_LOGDEBUG,
			"%s, string reference, index: %d, not supported, ignoring!",
			__FUNCTION__, refIndex);
		return len;
	}
	else
	{
		uint32_t nSize = (ref >> 1);

		str->av_val = (char *)data;
		str->av_len = nSize;

		return len + nSize;
	}
	return len;
}

int
AMF3Prop_Decode(AMFObjectProperty *prop, const char *pBuffer, int nSize,
int bDecodeName)
{
	int nOriginalSize = nSize;
	AMF3DataType type;

	prop->p_name.av_len = 0;
	prop->p_name.av_val = NULL;

	if (nSize == 0 || !pBuffer)
	{
		RTMP_Log(RTMP_LOGDEBUG, "empty buffer/no buffer pointer!");
		return -1;
	}

	/* decode name */
	if (bDecodeName)
	{
		AVal name;
		int nRes = AMF3ReadString(pBuffer, &name);

		if (name.av_len <= 0)
			return nRes;

		prop->p_name = name;
		pBuffer += nRes;
		nSize -= nRes;
	}

	/* decode */
	type = *pBuffer++;
	nSize--;

	switch (type)
	{
	case AMF3_UNDEFINED:
	case AMF3_NULL:
		prop->p_type = AMF_NULL;
		break;
	case AMF3_FALSE:
		prop->p_type = AMF_BOOLEAN;
		prop->p_vu.p_number = 0.0;
		break;
	case AMF3_TRUE:
		prop->p_type = AMF_BOOLEAN;
		prop->p_vu.p_number = 1.0;
		break;
	case AMF3_INTEGER:
	{
		int32_t res = 0;
		int len = AMF3ReadInteger(pBuffer, &res);
		prop->p_vu.p_number = (double)res;
		prop->p_type = AMF_NUMBER;
		nSize -= len;
		break;
	}
	case AMF3_DOUBLE:
		if (nSize < 8)
			return -1;
		prop->p_vu.p_number = AMF_DecodeNumber(pBuffer);
		prop->p_type = AMF_NUMBER;
		nSize -= 8;
		break;
	case AMF3_STRING:
	case AMF3_XML_DOC:
	case AMF3_XML:
	{
		int len = AMF3ReadString(pBuffer, &prop->p_vu.p_aval);
		prop->p_type = AMF_STRING;
		nSize -= len;
		break;
	}
	case AMF3_DATE:
	{
		int32_t res = 0;
		int len = AMF3ReadInteger(pBuffer, &res);

		nSize -= len;
		pBuffer += len;

		if ((res & 0x1) == 0)
		{			/* reference */
			uint32_t nIndex = (res >> 1);
			RTMP_Log(RTMP_LOGDEBUG, "AMF3_DATE reference: %d, not supported!", nIndex);
		}
		else
		{
			if (nSize < 8)
				return -1;

			prop->p_vu.p_number = AMF_DecodeNumber(pBuffer);
			nSize -= 8;
			prop->p_type = AMF_NUMBER;
		}
		break;
	}
	case AMF3_OBJECT:
	{
		int nRes = AMF3_Decode(&prop->p_vu.p_object, pBuffer, nSize, TRUE);
		if (nRes == -1)
			return -1;
		nSize -= nRes;
		prop->p_type = AMF_OBJECT;
		break;
	}
	case AMF3_ARRAY:
	case AMF3_BYTE_ARRAY:
	default:
		RTMP_Log(RTMP_LOGDEBUG, "%s - AMF3 unknown/unsupported datatype 0x%02x, @%p",
			__FUNCTION__, (unsigned char)(*pBuffer), pBuffer);
		return -1;
	}

	return nOriginalSize - nSize;
}

int
AMFProp_Decode(AMFObjectProperty *prop, const char *pBuffer, int nSize,
int bDecodeName)
{
	int nOriginalSize = nSize;
	int nRes;

	prop->p_name.av_len = 0;
	prop->p_name.av_val = NULL;

	if (nSize == 0 || !pBuffer)
	{
		RTMP_Log(RTMP_LOGDEBUG, "%s: Empty buffer/no buffer pointer!", __FUNCTION__);
		return -1;
	}

	if (*pBuffer == AMF_NULL)
		bDecodeName = 0;

	if (bDecodeName && nSize < 4)
	{				/* at least name (length + at least 1 byte) and 1 byte of data */
		RTMP_Log(RTMP_LOGDEBUG,
			"%s: Not enough data for decoding with name, less than 4 bytes!",
			__FUNCTION__);
		return -1;
	}

	if (bDecodeName)
	{
		unsigned short nNameSize = AMF_DecodeInt16(pBuffer);
		if (nNameSize > nSize - 2)
		{
			RTMP_Log(RTMP_LOGDEBUG,
				"%s: Name size out of range: namesize (%d) > len (%d) - 2",
				__FUNCTION__, nNameSize, nSize);
			return -1;
		}

		AMF_DecodeString(pBuffer, &prop->p_name);
		nSize -= 2 + nNameSize;
		pBuffer += 2 + nNameSize;
	}

	if (nSize == 0)
	{
		return -1;
	}

	nSize--;

	prop->p_type = *pBuffer++;
	switch (prop->p_type)
	{
	case AMF_NUMBER:
		if (nSize < 8)
			return -1;
		prop->p_vu.p_number = AMF_DecodeNumber(pBuffer);
		nSize -= 8;
		break;
	case AMF_BOOLEAN:
		if (nSize < 1)
			return -1;
		prop->p_vu.p_number = (double)AMF_DecodeBoolean(pBuffer);
		nSize--;
		break;
	case AMF_STRING:
	{
		unsigned short nStringSize = AMF_DecodeInt16(pBuffer);

		if (nSize < (long)nStringSize + 2)
			return -1;
		AMF_DecodeString(pBuffer, &prop->p_vu.p_aval);
		nSize -= (2 + nStringSize);
		break;
	}
	case AMF_OBJECT:
	{
		int nRes = AMF_Decode(&prop->p_vu.p_object, pBuffer, nSize, TRUE);
		if (nRes == -1)
			return -1;
		nSize -= nRes;
		break;
	}
	case AMF_MOVIECLIP:
	{
		RTMP_Log(RTMP_LOGERROR, "AMF_MOVIECLIP reserved!");
		return -1;
		break;
	}
	case AMF_NULL:
	case AMF_UNDEFINED:
	case AMF_UNSUPPORTED:
		prop->p_type = AMF_NULL;
		break;
	case AMF_REFERENCE:
	{
		RTMP_Log(RTMP_LOGERROR, "AMF_REFERENCE not supported!");
		return -1;
		break;
	}
	case AMF_ECMA_ARRAY:
	{
		nSize -= 4;

		/* next comes the rest, mixed array has a final 0x000009 mark and names, so its an object */
		nRes = AMF_Decode(&prop->p_vu.p_object, pBuffer + 4, nSize, TRUE);
		if (nRes == -1)
			return -1;
		nSize -= nRes;
		prop->p_type = AMF_OBJECT;
		break;
	}
	case AMF_OBJECT_END:
	{
		return -1;
		break;
	}
	case AMF_STRICT_ARRAY:
	{
		unsigned int nArrayLen = AMF_DecodeInt32(pBuffer);
		nSize -= 4;

		nRes = AMF_DecodeArray(&prop->p_vu.p_object, pBuffer + 4, nSize,
			nArrayLen, FALSE);
		if (nRes == -1)
			return -1;
		nSize -= nRes;
		prop->p_type = AMF_OBJECT;
		break;
	}
	case AMF_DATE:
	{
		RTMP_Log(RTMP_LOGDEBUG, "AMF_DATE");

		if (nSize < 10)
			return -1;

		prop->p_vu.p_number = AMF_DecodeNumber(pBuffer);
		prop->p_UTCoffset = AMF_DecodeInt16(pBuffer + 8);

		nSize -= 10;
		break;
	}
	case AMF_LONG_STRING:
	case AMF_XML_DOC:
	{
		unsigned int nStringSize = AMF_DecodeInt32(pBuffer);
		if (nSize < (long)nStringSize + 4)
			return -1;
		AMF_DecodeLongString(pBuffer, &prop->p_vu.p_aval);
		nSize -= (4 + nStringSize);
		if (prop->p_type == AMF_LONG_STRING)
			prop->p_type = AMF_STRING;
		break;
	}
	case AMF_RECORDSET:
	{
		RTMP_Log(RTMP_LOGERROR, "AMF_RECORDSET reserved!");
		return -1;
		break;
	}
	case AMF_TYPED_OBJECT:
	{
		RTMP_Log(RTMP_LOGERROR, "AMF_TYPED_OBJECT not supported!");
		return -1;
		break;
	}
	case AMF_AVMPLUS:
	{
		int nRes = AMF3_Decode(&prop->p_vu.p_object, pBuffer, nSize, TRUE);
		if (nRes == -1)
			return -1;
		nSize -= nRes;
		prop->p_type = AMF_OBJECT;
		break;
	}
	default:
		RTMP_Log(RTMP_LOGDEBUG, "%s - unknown datatype 0x%02x, @%p", __FUNCTION__,
			prop->p_type, pBuffer - 1);
		return -1;
	}

	return nOriginalSize - nSize;
}

void
AMFProp_Dump(AMFObjectProperty *prop)
{
	char strRes[256];
	char str[256];
	AVal name;

	if (prop->p_type == AMF_INVALID)
	{
		RTMP_Log(RTMP_LOGDEBUG, "Property: INVALID");
		return;
	}

	if (prop->p_type == AMF_NULL)
	{
		RTMP_Log(RTMP_LOGDEBUG, "Property: NULL");
		return;
	}

	if (prop->p_name.av_len)
	{
		name = prop->p_name;
	}
	else
	{
		name.av_val = "no-name";
		name.av_len = sizeof("no-name") - 1;
	}
	if (name.av_len > 18)
		name.av_len = 18;

	ont_platform_snprintf(strRes, 255, "Name: %18.*s, ", name.av_len, name.av_val);

	if (prop->p_type == AMF_OBJECT)
	{
		RTMP_Log(RTMP_LOGDEBUG, "Property: <%sOBJECT>", strRes);
		AMF_Dump(&prop->p_vu.p_object);
		return;
	}

	switch (prop->p_type)
	{
	case AMF_NUMBER:
		ont_platform_snprintf(str, 255, "NUMBER:\t%.2f", prop->p_vu.p_number);
		break;
	case AMF_BOOLEAN:
		ont_platform_snprintf(str, 255, "BOOLEAN:\t%s",
			prop->p_vu.p_number != 0.0 ? "TRUE" : "FALSE");
		break;
	case AMF_STRING:
		ont_platform_snprintf(str, 255, "STRING:\t%.*s", prop->p_vu.p_aval.av_len,
			prop->p_vu.p_aval.av_val);
		break;
	case AMF_DATE:
		ont_platform_snprintf(str, 255, "DATE:\ttimestamp: %.2f, UTC offset: %d",
			prop->p_vu.p_number, prop->p_UTCoffset);
		break;
	default:
		ont_platform_snprintf(str, 255, "INVALID TYPE 0x%02x", (unsigned char)prop->p_type);
	}

	RTMP_Log(RTMP_LOGDEBUG, "Property: <%s%s>", strRes, str);
}

void
AMFProp_Reset(AMFObjectProperty *prop)
{
	if (prop->p_type == AMF_OBJECT)
		AMF_Reset(&prop->p_vu.p_object);
	else
	{
		prop->p_vu.p_aval.av_len = 0;
		prop->p_vu.p_aval.av_val = NULL;
	}
	prop->p_type = AMF_INVALID;
}

/* AMFObject */

char *
AMF_Encode(AMFObject *obj, char *pBuffer, char *pBufEnd)
{
	int i;

	if (pBuffer + 4 >= pBufEnd)
		return NULL;

	*pBuffer++ = AMF_OBJECT;

	for (i = 0; i < obj->o_num; i++)
	{
		char *res = AMFProp_Encode(&obj->o_props[i], pBuffer, pBufEnd);
		if (res == NULL)
		{
			RTMP_Log(RTMP_LOGERROR, "AMF_Encode - failed to encode property in index %d",
				i);
			break;
		}
		else
		{
			pBuffer = res;
		}
	}

	if (pBuffer + 3 >= pBufEnd)
		return NULL;			/* no room for the end marker */

	pBuffer = AMF_EncodeInt24(pBuffer, pBufEnd, AMF_OBJECT_END);

	return pBuffer;
}

int
AMF_DecodeArray(AMFObject *obj, const char *pBuffer, int nSize,
int nArrayLen, int bDecodeName)
{
	int nOriginalSize = nSize;
	int bError = FALSE;

	obj->o_num = 0;
	obj->o_props = NULL;
	while (nArrayLen > 0)
	{
		AMFObjectProperty prop;
		int nRes;
		nArrayLen--;

		nRes = AMFProp_Decode(&prop, pBuffer, nSize, bDecodeName);
		if (nRes == -1)
			bError = TRUE;
		else
		{
			nSize -= nRes;
			pBuffer += nRes;
			AMF_AddProp(obj, &prop);
		}
	}
	if (bError)
		return -1;

	return nOriginalSize - nSize;
}

int
AMF3_Decode(AMFObject *obj, const char *pBuffer, int nSize, int bAMFData)
{
	int nOriginalSize = nSize;
	int32_t ref;
	int len;

	obj->o_num = 0;
	obj->o_props = NULL;
	if (bAMFData)
	{
		if (*pBuffer != AMF3_OBJECT)
			RTMP_Log(RTMP_LOGERROR,
			"AMF3 Object encapsulated in AMF stream does not start with AMF3_OBJECT!");
		pBuffer++;
		nSize--;
	}

	ref = 0;
	len = AMF3ReadInteger(pBuffer, &ref);
	pBuffer += len;
	nSize -= len;

	if ((ref & 1) == 0)
	{				/* object reference, 0xxx */
		uint32_t objectIndex = (ref >> 1);

		RTMP_Log(RTMP_LOGDEBUG, "Object reference, index: %d", objectIndex);
	}
	else				/* object instance */
	{
		int32_t classRef = (ref >> 1);

		AMF3ClassDef cd = { { 0, 0 }
		};
		AMFObjectProperty prop;

		if ((classRef & 0x1) == 0)
		{			/* class reference */
			uint32_t classIndex = (classRef >> 1);
			RTMP_Log(RTMP_LOGDEBUG, "Class reference: %d", classIndex);
		}
		else
		{
			int32_t classExtRef = (classRef >> 1);
			int i;

			cd.cd_externalizable = (classExtRef & 0x1) == 1;
			cd.cd_dynamic = ((classExtRef >> 1) & 0x1) == 1;

			cd.cd_num = classExtRef >> 2;

			/* class name */

			len = AMF3ReadString(pBuffer, &cd.cd_name);
			nSize -= len;
			pBuffer += len;

			/*std::string str = className; */

			RTMP_Log(RTMP_LOGDEBUG,
				"Class name: %s, externalizable: %d, dynamic: %d, classMembers: %d",
				cd.cd_name.av_val, cd.cd_externalizable, cd.cd_dynamic,
				cd.cd_num);

			for (i = 0; i < cd.cd_num; i++)
			{
				AVal memberName;
				len = AMF3ReadString(pBuffer, &memberName);
				RTMP_Log(RTMP_LOGDEBUG, "Member: %s", memberName.av_val);
				AMF3CD_AddProp(&cd, &memberName);
				nSize -= len;
				pBuffer += len;
			}
		}

		/* add as referencable object */

		if (cd.cd_externalizable)
		{
			int nRes;
			AVal name = AVC("DEFAULT_ATTRIBUTE");

			RTMP_Log(RTMP_LOGDEBUG, "Externalizable, TODO check");

			nRes = AMF3Prop_Decode(&prop, pBuffer, nSize, FALSE);
			if (nRes == -1)
				RTMP_Log(RTMP_LOGDEBUG, "%s, failed to decode AMF3 property!",
				__FUNCTION__);
			else
			{
				nSize -= nRes;
				pBuffer += nRes;
			}

			AMFProp_SetName(&prop, &name);
			AMF_AddProp(obj, &prop);
		}
		else
		{
			int nRes, i;
			for (i = 0; i < cd.cd_num; i++)	/* non-dynamic */
			{
				nRes = AMF3Prop_Decode(&prop, pBuffer, nSize, FALSE);
				if (nRes == -1)
					RTMP_Log(RTMP_LOGDEBUG, "%s, failed to decode AMF3 property!",
					__FUNCTION__);

				AMFProp_SetName(&prop, AMF3CD_GetProp(&cd, i));
				AMF_AddProp(obj, &prop);

				pBuffer += nRes;
				nSize -= nRes;
			}
			if (cd.cd_dynamic)
			{
				int len = 0;

				do
				{
					nRes = AMF3Prop_Decode(&prop, pBuffer, nSize, TRUE);
					AMF_AddProp(obj, &prop);

					pBuffer += nRes;
					nSize -= nRes;

					len = prop.p_name.av_len;
				} while (len > 0);
			}
		}
		RTMP_Log(RTMP_LOGDEBUG, "class object!");
	}
	return nOriginalSize - nSize;
}

int
AMF_Decode(AMFObject *obj, const char *pBuffer, int nSize, int bDecodeName)
{
	int nOriginalSize = nSize;
	int bError = FALSE;		/* if there is an error while decoding - try to at least find the end mark AMF_OBJECT_END */

	obj->o_num = 0;
	obj->o_props = NULL;
	while (nSize > 0)
	{
		AMFObjectProperty prop;
		int nRes;

		if (nSize >= 3 && AMF_DecodeInt24(pBuffer) == AMF_OBJECT_END)
		{
			nSize -= 3;
			bError = FALSE;
			break;
		}

		if (bError)
		{
			RTMP_Log(RTMP_LOGERROR,
				"DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!");
			nSize--;
			pBuffer++;
			continue;
		}

		nRes = AMFProp_Decode(&prop, pBuffer, nSize, bDecodeName);
		if (nRes == -1)
			bError = TRUE;
		else
		{
			nSize -= nRes;
			pBuffer += nRes;
			AMF_AddProp(obj, &prop);
		}
	}

	if (bError)
		return -1;

	return nOriginalSize - nSize;
}

void
AMF_AddProp(AMFObject *obj, const AMFObjectProperty *prop)
{
	if (!(obj->o_num & 0x0f))
		obj->o_props =
		realloc(obj->o_props, (obj->o_num + 16) * sizeof(AMFObjectProperty));
	memcpy(&obj->o_props[obj->o_num++], prop, sizeof(AMFObjectProperty));
}

int
AMF_CountProp(AMFObject *obj)
{
	return obj->o_num;
}

AMFObjectProperty *
AMF_GetProp(AMFObject *obj, const AVal *name, int nIndex)
{
	if (nIndex >= 0)
	{
		if (nIndex < obj->o_num)
			return &obj->o_props[nIndex];
	}
	else
	{
		int n;
		for (n = 0; n < obj->o_num; n++)
		{
			if (AVMATCH(&obj->o_props[n].p_name, name))
				return &obj->o_props[n];
		}
	}

	return (AMFObjectProperty *)&AMFProp_Invalid;
}

void
AMF_Dump(AMFObject *obj)
{
	int n;
	RTMP_Log(RTMP_LOGDEBUG, "(object begin)");
	for (n = 0; n < obj->o_num; n++)
	{
		AMFProp_Dump(&obj->o_props[n]);
	}
	RTMP_Log(RTMP_LOGDEBUG, "(object end)");
}

void
AMF_Reset(AMFObject *obj)
{
	int n;
	for (n = 0; n < obj->o_num; n++)
	{
		AMFProp_Reset(&obj->o_props[n]);
	}
	ont_platform_free(obj->o_props);
	obj->o_props = NULL;
	obj->o_num = 0;
}


/* AMF3ClassDefinition */

void
AMF3CD_AddProp(AMF3ClassDef *cd, AVal *prop)
{
	if (!(cd->cd_num & 0x0f))
		cd->cd_props = realloc(cd->cd_props, (cd->cd_num + 16) * sizeof(AVal));
	cd->cd_props[cd->cd_num++] = *prop;
}

AVal *
AMF3CD_GetProp(AMF3ClassDef *cd, int nIndex)
{
	if (nIndex >= cd->cd_num)
		return (AVal *)&AV_empty;
	return &cd->cd_props[nIndex];
}

